<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        const p1 = new Promise((resolve,reject)=>{
            try{
                console.log('kais获取a');
                setTimeout(()=>{
                    console.log('成功');
                    resolve('成功')
                },1000)
            }catch(e){
                reject(e.message)
            }
        })
        // console.log('p1',p1);
        const p2 =  p1.finally((reason)=>{
            console.log('finally", reason');
            // throw new Error('错啦')
            return new Promise((resolve,reject)=>{
                // reject('失败')
                resolve('成功')
            })
        })
        console.log("p2", p2);
    </script>
</body>
</html>